You cannot be sure from the information the poem provides us with. But it is only logical to assume that this grand celebration must be as a result of some achievement on the speaker’s part. Perhaps it was a victory in war or the assemblage for fighting one, or winning a popular election to an office, or being nominated as a ruler, or maybe something else. It can be assumed at this point in the poem that it concerned the common people highly, and they were happy on the occasion. The patriot is seen as a public hero in this stanza who is greeted with much love and affection by the commoners.